MOTORISTS are being warned over the possible impact of fog on the Monday morning rush hour.

The Met Office has issued a weather warning that covers Dorset and runs from 1am to 10.30am tomorrow.

It states: "Areas of fog are likely to start to form in places during Sunday evening but the main problems would appear to be more likely later tonight and through the Monday morning rush hour.

"By this stage, the western part of the warning area may be seeing improving visibilities.

"Areas of dense and freezing fog may lead to journeys taking longer than usual, with possible delays to air travel. Watch out, too, for slippery surfaces.

"As the cold airmass across much of the south of England moistens up, there will be a much greater risk of fog than on recent nights.

"Areas of cloud trying to advance from the west will add to the uncertainty in extent of fog later in the night and through Monday morning."